Veins Have Less Elastin in Their Walls Than Do Arteries

question 92

True/False

Veins have less elastin in their walls than do arteries.

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Definitions:

REM Sleep

A phase of sleep characterized by rapid eye movements, dream vividness, and increased brain activity.

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, regulating sleep-wake cycles among other bodily functions.

Neurological Disorders

A broad category of conditions that affect the nervous system, including the brain, spinal cord, and nerves, leading to various symptoms and disabilities.

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness.